A Quad-Element UWB-MIMO Antenna with Band-Notch and Reduced Mutual Coupling Based on EBG Structures

被引：87

作者：

Wu, Wenjing ^{[1
]}

Yuan, Bo ^{[1
]}

Wu, Aiting ^{[1
]}

机构：

[1] Hangzhou Dianzi Univ, Inst Antenna & Microwave Technol, Hangzhou 310018, Zhejiang, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ANTENNAS AND PROPAGATION | 2018年 / 2018卷

关键词：

SYSTEMS; DESIGN;

D O I：

10.1155/2018/8490740

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A compact planar quad-element ultrawideband (UWB) antenna with a band-notch and low coupling for multiple-input multiple-output (MIMO) system is proposed in this paper. The antenna consists of four circular monopoles with modified defected ground plane and a periodic electromagnetic band gap (EBG) structures. The proposed EBG structures are modified from the traditional mushroom-like ones, comprised of patterns of grids on the top patch, the metallic ground plane, and several vias that connect the top and bottom plane. It is printed at the center of the dielectric substrate to lower electromagnetic coupling between the parallel elements. Besides, by etching four crescent ring-shaped resonant slots on the radiators, a sharp band-notched characteristic is achieved. From the experimental results, the -10 dB bandwidth of the antenna is extended covers from 3.0 to 16.2 GHz, with a sharp notched band at 4.6 GHz. And the isolation is greater than 17.5 dB between its elements, with a peak gain of 8.4 dB and a peak efficiency of 91.2%. Moreover, it has a compact size of 0.6 lambda x 0.6 lambda x 0.016 lambda at 3 GHz and could be a good candidate for portable devices.

引用

页数：10

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